Before operating an ASUS router, a user has to register the product in an ASUS account. Without registering your product in an ASUS account, you cannot operate the router in a network. After you log in to the ASUS account, a user becomes eligible to receive various product promotions from ASUS. Go to the official website of ASUS and register your product there before performing the router.asus.com setup process.
https://httprouterasus.net/